Chyeguide
Contents
1. Amplified Spontaneous Emission (ASE) Model of DFB Laser Diodes 4
1.1 Single-Section DFB Laser Diodes 4
1.2 Multisection DFB Laser Diodes 10
1.3 Threshold Condition 13
2. Uniform DFB Laser Diodes with Zero Facet-Reflections 16
2.1 Threshold Conditions 16
2.2 ASE Spectrum 20
3. Phase-shifted DFB Laser Diodes 23
3.1 Introduction of Phase Shift in Grating 23
3.2 Theoretical Model of λ/4 Phase-shifted DFB Lase Diodes 24
3.3 Multiple phase-shift DFB Laser Diodes 29
4. Side Mode Suppression Ratio (SMSR) 35
4.1 Rate Equation Model for SMSR 35
4.2 Criteria for Single-Mode Operation 39
4.3 SMSR by Integrated ASE Power Spectral Density 40
4.4 SMSR Degradation by Spatial Hole Burning 46
4.5 Self-consistent Model for SHB Analysis 49
4.6 Transfer Matrix Amplified Spontaneous Emission Model above Threshold 55
5. DFB Lasers with Reflection at One Facet 65
5.1 ASE Spectra 65
5.2 Threshold Analysis 68
5.3 SMSR by ASE model 74
5.4 Experimental Verification of Facet Grating Phase 74
6. λ/4 Phase-shifted DFB Lasers with High Reflection at One Facet 76
6.1 ASE Spectra 76
6.2 Threshold Analysis 78
7. Partial Corrugation DFB Lasers 84
7.1 ASE Spectra 84
7.2 Threshold Analysis 86
8. Gain-coupled and Loss-coupled DFB Lasers 100
8.1 Longitudinal Gain Modulation 100
8.2 Single-Mode Operation by Complex Coupling 102
9. Parameter Dependence of Lasing Wavelength 116
9.1 Temperature Dependence of Lasing Wavelength 116
9.2 Injection Currents Effects 117
Appendix A: Spontaneous Emission Power Spectral Density 119
Appendix B: Wronskian 125
Appendix C: Stimulated Emission Recombination Current 129
References 133
Matlab Programs 137
Total 155 pages, 75 figures, 36 tables, Matlab programs ~1700 lines
Lasing Modes
Engineering Notes: Lasing Modes of Distributed Feedback Laser Diodes and Simulation Programs